No, I suspect Quicktime and this dreaded ProRes alpha ALAC as the culprit. Exporting with PNG alpha from 13.5 gives a file with readable Alpha, so it's not Moho's fault.

Mac Mini hasn't arrived yet, so I did some better testing with what's here. I use 3 macs, with OS 10.6, 10.11 and 10.15, so each has different codecs available in quicktime. And of course it's different Moho versions: OS 10.6 AS 9, TVpaint OS 10.11 AS 11 OS 10.15 Moho 13.5 FinalCut 10.3 runs on OS 1...

Ah, standard problem.

Have dog on one layer, tree on another. Duplicte dog layer, put one in front of tree, one behind. Switch visibility of body parts where necessary.

To animate layer order, layers must be in a bone or group folder, in which "animated layer order" is checked.

This problem already exists in Moho 13.5, and since Mac OS 10.15. I can render in ProRes Alpha ALAC as well as in PNG Alpha PSM , whatever that means, but can't import this into FinalCut, another Apple product, with Alpha working. I can't even play PNG Alpha PSM files on that Mac, but I can import t...

You should have the installer in the Backup? Preferrably the one which doesn't need online activation?

after installlation it's just typing in serial number.

File numbering can be corrected in the Finder: select all files and right-click "rename n objects".

This is a task where I really miss the old Animo software. You could colour a character once, then have different color sets based on the first one so you could have a completely new coloring without having to assign colours again.

Depends on your character design. If you want to change each shape into a certain colour: no, that's only possible in the tedious way of changing one by one. If you want your character getting darker for being in shadows or a night scene: put it into a group folder and create another layer with a sh...

There's books about that, I recommend to check your library.

Looks a lot like my very first smart bone attempts ... The trick is to have more than just start and end keys for the different face parts, and to set those right you need some guide. I do my head turns in a bitmap program first, correct a lot until each and every frame looks right. Only then I impo...

The cage and bar outlines are much fatter than the cat's outlines. If anything, they should be less prominent. Shadow and highlights are essential to show the cylindrical shape of bars. Also there sould be stronger contrast in the shadows inside the cage. In life action you'd film this with a long l...

I tried to google "shatter" which is the term I learned for the effect of jittery/blinky BG elements in a camera pan, but Google doesn't let me do it anymore - it's only offering "shutter" which is not what I want. Enshittification if internet in full action! More googling only c...

This is normal behaviour. There's nothing wrong with the first version.

Bigger productions may give the fastest moving plates a motion blur pass. Since those characters don't move you could give the 2 layers some treatment with directional blur.

Hm, can you test with different settings of scale compensation on that layer?

Affinity is the maker, its programs are called Photo, Designer and Publisher, and are able to replace Photoshop, Illustrator and Indesign (the unholy Adobe Trinity).